Oil-burner.



No. 759,822. PATENTED MAY 10, 1904.

D. H. MOSTELLER.

OIL BURNER.

APPLIUATION rznnn JUNE 12. 1903.

N0 MODEL.

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, UNITED STATES Patented May 10, 1904.

PATENT OEEIcE.

DOSIER H. MOSTELLER, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR OF ONE-HALFTO JACOB HOEGES, OF SAN FRANCISCO, CALIFORNIA.

OIL-BURNER.

SPECIFICATION forming part of Letters Patent No. 759,822, dated May I0,1904.

Application filed June 12, 1903. Serial No. 161,152. (No model.)

To all whom it may concern:

Be it known that I, DOSIER H. MOSTELLER, a citizen of the United States,residing at San Francisco, in the county of San Francisco and State ofCalifornia, have invented certain new and useful Improvements inOil-Burners, of which the following is aspecification.

My invention relates to improvements in oilburners, the objects of myinvention being, first,to provide means whereby a steady stream of oilmay be caused to issue in a substantially straight line under varyingpressures; secondly,to provide means whereby the size of the stream ofoil may be readily changed to suit diflerent conditions; thirdly, toprovide means for freely admitting oil from the supply-pipe to theoil-burner without reducing the pressure, while at the same timeexcluding the entrance into the burner of small particles of dirt whichwould clog up the orifice through which the stream issues.

My invention therefore resides in the novel construction, combination,and arrangement of parts for above purposes hereinafter specified, andparticularly pointed out in the claim.

In the accompanying drawings, Figure 1 is a side view of the burner.Fig. 2 is a longitudinal section of the same. Fig. 3 is a perspectiveview of the disk containing the discharge-orifice detached.

Referring to the drawings, 1 represents the oil-supply pipe screwed intoa casting 2, in which is also screwed a tube 3, forming a reservoir forthe oil. On the end of said tube 3 is screwed a cap 4, having a centralaperture 5, and within said cap is inserted a disk 6, pressed againstsaid cap by the abutting end of the tube 3 and containing an orifice 7for the discharge of the oil. It is found that by this ar rangement ofthe straight tube 3 of comparatively large diameter and the flat disk 6having a narrow orifice a steady stream of oil is discharged in asubstantially straight line, which will maintain its horizontal orrectilinear direction even under pressures of oil varying considerably.The arrangement also permits 0t readily changing the size of the streamof oil, for the disk is very easily removed and replaced by one havingan oriiiee larger or smaller, as may be desired. The valve-stem 8 5 hasa screw-threaded engagement with said casting, as shown at 9, and itsend is wide and frusto-conical in form, as shown at 10, and fits withinthe similarly-shaped seat 11. The object in making the end of the valve10 comparatively wide and frusto-conical, as shown, a is to permit ofthe oil to iiow freely into the tube 3 without aiiording such a wideentrance for the oil as would admit also particles oi dirt.I-Ieretofore, so far as my knowledge eX- tends, needle-valves for theadmission of liquid have been made pointed at their ends, so that theseat in which they fitted was comparatively narrow and the hollowconical stream of liquid passing around the valve wasquite narrow. Theconsequence was that in order to admit of oil flowing in withoutchecking the pressure it was necessary for the distance of the valvefrom its seat to be so large that particles of foreign matter would beadmitted which could not pass through the dischargeorifice.

It will readily be seen that with the present construction by making thevalve 10 comparatively wide and the seat also wide the distance betweenthe side of the valve and the side of the seat need not be greater thanthe diameter of the orifice 7, so that all particles which would notpass through said orifice cannot obtain admission to the tube 3, whileat the same time the pressure is not reduced. appreciably, because theextent of the ringlike stream of oil passing the valve 10 permits of theoil flowing into the tube 3 with suflicient freedom not to materiallyreduce the pressure. For instance, suppose the diameter of the oriliee 7is one-hundredth of an inch and the width or the valve 10 isthree-eighths of an inch, which makes the circumference aboutteneigl1ths of an inch, it will readily be seen that the stream of oilwhich passes through the valve 10 is about one thousand times as largeas that passing through the orifice 7. The velocity of flow willtherefore be so small at the valve 10, compared with the velocitythrough the orifice 7, that the pressure will not be materially reduced.Nevertheless the valve 10 will be so close to its seat that allparticles Will be excluded which could not pass through the orifice 7.There is therefore now no danger of clogging up said orifice 7 Animportant feature of this invention consists in the arrangement of thevalve 10, which is directed opposite to the flow of the liquid.

By this construction the valve is made selfcleaning, for the closing ofthe valve tends to thrust out any particles of grit or dirt Which mayhave lodged at the entrance of the annular passage around the Valve.

I claim An oil-burner comprising a horizontal tube of large diametercomparatively With the outlet, thereby forming a reservoir for oil, athin flat disk and a cap for pressing the same against the end of thetube to close the tube except for an orifice, said disk having a centralorifice of small but uniform diameter, and a valve for admitting oil,said valve and its seat being frusto-eonical in form and of sufiicientWidth to furnish an annular entrance-passage of no greater Width thanthe orifice but of sufiicicnt peripheral extent to admit the oil freelyand Without materially reducing the pressure, said valve tapering in theopposite direction to the flow of the oil, whereby the oil is caused tofloW out in a straight line under pressure, substantially as described.

In Witness whereof I have hereunto set my hand in the presence of tWosubscribing Witnesses.

DOSIER H. MOSTELLER.

Witnesses:

FRANcIs M. RIeI-IT, M. STUART.

